you are doing fine. everyone loses different so its hard to say how much one "should" lose. I am sure there is an average but when you add in stalls and stuff like that it doesnt ever turn out that way.
its hard to do this and always wonder if you are doing it right or whether or not this will work for you. having been there and revisiting quite frequently all i can say is, get rid of your scale, follow the plan, listen to your body. honestly, when i dont weigh myself for a period of time, its easier to get a hold of all the other things. like when you are hungry, are you eating carbs by any chance? there are little things you can pick up about yourself along the way and learn how to work around.
it's going to work out and you arent alone by any means